Having looked at the specs (
http://www.dell.com/downloads/emea/prod ... 520_uk.pdf) you could have one or more issues.
1. Your processor may not support 'Processor Advanced Extensions'
2. We don't know if your Graphics is the in-built Intel GMA or a Radeon Card (see spec sheet)
Based on the error message you received you will need to add something to the Boot command by pressing 'E' at boot time (if your DVD gets that far) and enter:
- Code:
ACPI=off
Keep us posted and some clarity as to your machine specs.
With regards to an 'older' version of Zorin you cannot go below Zorin 9 Core or Zorin 9 Lite.
Also Knoppix 1.0 is quite ancient - ok for recovery use (that said Freespire 1.01.13 was superior to Knoppix 4 for data recovery!) but has the misfortune of being limited to ReiserFS which is poor compared to 'ext4' (not to mention that it was written by a convicted killer!)
Any version of GNU/Linux you decide to run should have a 'glibc' version of 2.18 or above - older versions of GNU/Linux Operating Systems will have a security risk if earlier versions of glibc are present:
See post:
viewtopic.php?f=3&t=9267